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In a confidence interval, increasing the confidence level while keeping the sample size fixed increases the width of the confidence interval. leaves the confidence interval unchanged. makes the confidence interval estimate more precise. makes the confidence interval estimate more reliable. decreases the width of the confidence interval. .
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In a completely randomized experimental design, 18 experimental units were used for the first treatment, 10 experimental units were used for the second treatment, and 15 experimental units were used for the third treatment. Part of the ANOVA table for this experiment is shown below. Source of.
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In a confidence interval, increasing the confidence level while keeping the sample size fixed increases the width of the confidence interval, leaves the confidence interval unchanged, makes the confidence interval estimate more precise, makes the confidence interval estimate more reliable, decreases the width of the confidence interval. The general form.
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In a clinical trial for a new headache medication, participants are randomly assigned to a treatment group or a placebo group. They do not know whether they are receiving the medication or a placebo. However the doctors administering the medication and evaluating the results do know which participants are receiving.
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